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Finding the Fourth Proportional to 279,693.34, 385,979.46 and 158,837.14

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Solution

The fourth proportional to 279,693.34, 385,979.46 and 158,837.14 is: 219,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,693.34 : 385,979.46 = 158,837.14 : x
  2. Step 2: Convert to fraction form
    279,693.34/385,979.46 = 158,837.14/x
  3. Step 3: Cross multiply
    279,693.34x = 385,979.46 × 158,837.14
  4. Step 4: Simplify right side
    279,693.34x = 61,307,873,525.14
  5. Step 5: Solve for x
    x = 61,307,873,525.14/279,693.34
  6. Step 6: Final answer
    x = 219,196.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.